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re PR tree-optimization/19967 (built-in folding causes excess diagnostics) 

PR tree-optimization/19967
	* builtins.c (expand_builtin_strstr, expand_builtin_strpbrk,
	expand_builtin_strchr, expand_builtin_strrchr): Take a new
	argument TYPE.  Adjust calls to fold_builtin_XXX.
	(expand_builtin, fold_builtin_1): Adjust calls to
	expand_builtin_XXX.
	(fold_builtin_strchr, fold_builtin_strpbrk,
	fold_builtin_strstr, fold_builtin_strrchr): Convert the folded
	result to a requested type TYPE.

	* testsuite/gcc.dg/pr19967.c: New.

From-SVN: r95109
This commit is contained in:
Kazu Hirata 2005-02-16 15:39:30 +00:00 committed by Kazu Hirata
parent de332a85f8
commit 5fcfe0b28b
4 changed files with 85 additions and 36 deletions
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10
gcc/ChangeLog
View File

@ -5,6 +5,16 @@
find_basic_blocks.
* config/sh/sh.c (sh_output_mi_thunk): Likewise.
PR tree-optimization/19967
* builtins.c (expand_builtin_strstr, expand_builtin_strpbrk,
expand_builtin_strchr, expand_builtin_strrchr): Take a new
argument TYPE. Adjust calls to fold_builtin_XXX.
(expand_builtin, fold_builtin_1): Adjust calls to
expand_builtin_XXX.
(fold_builtin_strchr, fold_builtin_strpbrk,
fold_builtin_strstr, fold_builtin_strrchr): Convert the folded
result to a requested type TYPE.
2005-02-16 Jakub Jelinek <jakub@redhat.com>
PR middle-end/19857

80
gcc/builtins.c
View File

@ -124,10 +124,10 @@ static rtx builtin_memset_gen_str (void *, HOST_WIDE_INT, enum machine_mode);
static rtx expand_builtin_memset (tree, rtx, enum machine_mode);
static rtx expand_builtin_bzero (tree);
static rtx expand_builtin_strlen (tree, rtx, enum machine_mode);
static rtx expand_builtin_strstr (tree, rtx, enum machine_mode);
static rtx expand_builtin_strpbrk (tree, rtx, enum machine_mode);
static rtx expand_builtin_strchr (tree, rtx, enum machine_mode);
static rtx expand_builtin_strrchr (tree, rtx, enum machine_mode);
static rtx expand_builtin_strstr (tree, tree, rtx, enum machine_mode);
static rtx expand_builtin_strpbrk (tree, tree, rtx, enum machine_mode);
static rtx expand_builtin_strchr (tree, tree, rtx, enum machine_mode);
static rtx expand_builtin_strrchr (tree, tree, rtx, enum machine_mode);
static rtx expand_builtin_alloca (tree, rtx);
static rtx expand_builtin_unop (enum machine_mode, tree, rtx, rtx, optab);
static rtx expand_builtin_frame_address (tree, tree);
@ -165,7 +165,7 @@ static tree fold_builtin_bitop (tree);
static tree fold_builtin_memcpy (tree);
static tree fold_builtin_mempcpy (tree, tree, int);
static tree fold_builtin_memmove (tree, tree);
static tree fold_builtin_strchr (tree);
static tree fold_builtin_strchr (tree, tree);
static tree fold_builtin_memcmp (tree);
static tree fold_builtin_strcmp (tree);
static tree fold_builtin_strncmp (tree);
@ -179,9 +179,9 @@ static tree fold_builtin_abs (tree, tree);
static tree fold_builtin_unordered_cmp (tree, enum tree_code, enum tree_code);
static tree fold_builtin_1 (tree, bool);
static tree fold_builtin_strpbrk (tree);
static tree fold_builtin_strstr (tree);
static tree fold_builtin_strrchr (tree);
static tree fold_builtin_strpbrk (tree, tree);
static tree fold_builtin_strstr (tree, tree);
static tree fold_builtin_strrchr (tree, tree);
static tree fold_builtin_strcat (tree);
static tree fold_builtin_strncat (tree);
static tree fold_builtin_strspn (tree);
@ -2534,11 +2534,11 @@ expand_builtin_strlen (tree arglist, rtx target,
in TARGET, if convenient (and in mode MODE if that's convenient). */
static rtx
expand_builtin_strstr (tree arglist, rtx target, enum machine_mode mode)
expand_builtin_strstr (tree arglist, tree type, rtx target, enum machine_mode mode)
{
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
{
tree result = fold_builtin_strstr (arglist);
tree result = fold_builtin_strstr (arglist, type);
if (result)
return expand_expr (result, target, mode, EXPAND_NORMAL);
}
@ -2550,11 +2550,11 @@ expand_builtin_strstr (tree arglist, rtx target, enum machine_mode mode)
in TARGET, if convenient (and in mode MODE if that's convenient). */
static rtx
expand_builtin_strchr (tree arglist, rtx target, enum machine_mode mode)
expand_builtin_strchr (tree arglist, tree type, rtx target, enum machine_mode mode)
{
if (validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
{
tree result = fold_builtin_strchr (arglist);
tree result = fold_builtin_strchr (arglist, type);
if (result)
return expand_expr (result, target, mode, EXPAND_NORMAL);
@ -2568,11 +2568,11 @@ expand_builtin_strchr (tree arglist, rtx target, enum machine_mode mode)
in TARGET, if convenient (and in mode MODE if that's convenient). */
static rtx
expand_builtin_strrchr (tree arglist, rtx target, enum machine_mode mode)
expand_builtin_strrchr (tree arglist, tree type, rtx target, enum machine_mode mode)
{
if (validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
{
tree result = fold_builtin_strrchr (arglist);
tree result = fold_builtin_strrchr (arglist, type);
if (result)
return expand_expr (result, target, mode, EXPAND_NORMAL);
}
@ -2584,11 +2584,11 @@ expand_builtin_strrchr (tree arglist, rtx target, enum machine_mode mode)
in TARGET, if convenient (and in mode MODE if that's convenient). */
static rtx
expand_builtin_strpbrk (tree arglist, rtx target, enum machine_mode mode)
expand_builtin_strpbrk (tree arglist, tree type, rtx target, enum machine_mode mode)
{
if (validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
{
tree result = fold_builtin_strpbrk (arglist);
tree result = fold_builtin_strpbrk (arglist, type);
if (result)
return expand_expr (result, target, mode, EXPAND_NORMAL);
}
@ -5482,27 +5482,27 @@ expand_builtin (tree exp, rtx target, rtx subtarget, enum machine_mode mode,
break;
case BUILT_IN_STRSTR:
target = expand_builtin_strstr (arglist, target, mode);
target = expand_builtin_strstr (arglist, TREE_TYPE (exp), target, mode);
if (target)
return target;
break;
case BUILT_IN_STRPBRK:
target = expand_builtin_strpbrk (arglist, target, mode);
target = expand_builtin_strpbrk (arglist, TREE_TYPE (exp), target, mode);
if (target)
return target;
break;
case BUILT_IN_INDEX:
case BUILT_IN_STRCHR:
target = expand_builtin_strchr (arglist, target, mode);
target = expand_builtin_strchr (arglist, TREE_TYPE (exp), target, mode);
if (target)
return target;
break;
case BUILT_IN_RINDEX:
case BUILT_IN_STRRCHR:
target = expand_builtin_strrchr (arglist, target, mode);
target = expand_builtin_strrchr (arglist, TREE_TYPE (exp), target, mode);
if (target)
return target;
break;
@ -7856,7 +7856,7 @@ fold_builtin_1 (tree exp, bool ignore)
return fold_builtin_fputs (arglist, ignore, true, NULL_TREE);
case BUILT_IN_STRSTR:
return fold_builtin_strstr (arglist);
return fold_builtin_strstr (arglist, type);
case BUILT_IN_STRCAT:
return fold_builtin_strcat (arglist);
@ -7872,11 +7872,11 @@ fold_builtin_1 (tree exp, bool ignore)
case BUILT_IN_STRCHR:
case BUILT_IN_INDEX:
return fold_builtin_strchr (arglist);
return fold_builtin_strchr (arglist, type);
case BUILT_IN_STRRCHR:
case BUILT_IN_RINDEX:
return fold_builtin_strrchr (arglist);
return fold_builtin_strrchr (arglist, type);
case BUILT_IN_STRCPY:
return fold_builtin_strcpy (exp, NULL_TREE);
@ -7891,7 +7891,7 @@ fold_builtin_1 (tree exp, bool ignore)
return fold_builtin_strncmp (arglist);
case BUILT_IN_STRPBRK:
return fold_builtin_strpbrk (arglist);
return fold_builtin_strpbrk (arglist, type);
case BUILT_IN_BCMP:
case BUILT_IN_MEMCMP:
@ -8326,7 +8326,7 @@ readonly_data_expr (tree exp)
form of the builtin function call. */
static tree
fold_builtin_strstr (tree arglist)
fold_builtin_strstr (tree arglist, tree type)
{
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
return 0;
@ -8344,13 +8344,15 @@ fold_builtin_strstr (tree arglist)
if (p1 != NULL)
{
const char *r = strstr (p1, p2);
tree tem;
if (r == NULL)
return build_int_cst (TREE_TYPE (s1), 0);
/* Return an offset into the constant string argument. */
return fold (build2 (PLUS_EXPR, TREE_TYPE (s1),
s1, build_int_cst (TREE_TYPE (s1), r - p1)));
tem = fold (build2 (PLUS_EXPR, TREE_TYPE (s1),
s1, build_int_cst (TREE_TYPE (s1), r - p1)));
return fold_convert (type, tem);
}
if (p2[0] == '\0')
@ -8390,7 +8392,7 @@ fold_builtin_strstr (tree arglist)
form of the builtin function call. */
static tree
fold_builtin_strchr (tree arglist)
fold_builtin_strchr (tree arglist, tree type)
{
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
return 0;
@ -8407,6 +8409,7 @@ fold_builtin_strchr (tree arglist)
{
char c;
const char *r;
tree tem;
if (target_char_cast (s2, &c))
return 0;
@ -8417,8 +8420,9 @@ fold_builtin_strchr (tree arglist)
return build_int_cst (TREE_TYPE (s1), 0);
/* Return an offset into the constant string argument. */
return fold (build2 (PLUS_EXPR, TREE_TYPE (s1),
s1, build_int_cst (TREE_TYPE (s1), r - p1)));
tem = fold (build2 (PLUS_EXPR, TREE_TYPE (s1),
s1, build_int_cst (TREE_TYPE (s1), r - p1)));
return fold_convert (type, tem);
}
return 0;
}
@ -8442,7 +8446,7 @@ fold_builtin_strchr (tree arglist)
form of the builtin function call. */
static tree
fold_builtin_strrchr (tree arglist)
fold_builtin_strrchr (tree arglist, tree type)
{
if (!validate_arglist (arglist, POINTER_TYPE, INTEGER_TYPE, VOID_TYPE))
return 0;
@ -8460,6 +8464,7 @@ fold_builtin_strrchr (tree arglist)
{
char c;
const char *r;
tree tem;
if (target_char_cast (s2, &c))
return 0;
@ -8470,8 +8475,9 @@ fold_builtin_strrchr (tree arglist)
return build_int_cst (TREE_TYPE (s1), 0);
/* Return an offset into the constant string argument. */
return fold (build2 (PLUS_EXPR, TREE_TYPE (s1),
s1, build_int_cst (TREE_TYPE (s1), r - p1)));
tem = fold (build2 (PLUS_EXPR, TREE_TYPE (s1),
s1, build_int_cst (TREE_TYPE (s1), r - p1)));
return fold_convert (type, tem);
}
if (! integer_zerop (s2))
@ -8504,7 +8510,7 @@ fold_builtin_strrchr (tree arglist)
form of the builtin function call. */
static tree
fold_builtin_strpbrk (tree arglist)
fold_builtin_strpbrk (tree arglist, tree type)
{
if (!validate_arglist (arglist, POINTER_TYPE, POINTER_TYPE, VOID_TYPE))
return 0;
@ -8522,13 +8528,15 @@ fold_builtin_strpbrk (tree arglist)
if (p1 != NULL)
{
const char *r = strpbrk (p1, p2);
tree tem;
if (r == NULL)
return build_int_cst (TREE_TYPE (s1), 0);
/* Return an offset into the constant string argument. */
return fold (build2 (PLUS_EXPR, TREE_TYPE (s1),
s1, build_int_cst (TREE_TYPE (s1), r - p1)));
tem = fold (build2 (PLUS_EXPR, TREE_TYPE (s1),
s1, build_int_cst (TREE_TYPE (s1), r - p1)));
return fold_convert (type, tem);
}
if (p2[0] == '\0')

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2005-02-16 Kazu Hirata <kazu@cs.umass.edu>
PR tree-optimization/19967
* gcc.dg/pr19967.c: New.
2005-02-16 Jakub Jelinek <jakub@redhat.com>
PR middle-end/19857

26
gcc/testsuite/gcc.dg/pr19967.c Normal file
View File

@ -0,0 +1,26 @@
/* PR middle-end/19967
These functions mentioned below are supposed to return char *.
However, fold_builtin_... had bugs that caused the return types to
be const char *. */
/* { dg-do compile } */
/* { dg-options "-pedantic" } */
char *strchr(const char *, int);
char *strrchr(const char *, int);
char *index(const char *, int);
char *rindex(const char *, int);
char *strpbrk(const char *, const char *);
char *strstr(const char *, const char *);
char *p;
void
f (void)
{
p = strchr(__func__, 'f');
p = strrchr(__func__, 'f');
p = index(__func__, 'f');
p = rindex(__func__, 'f');
p = strpbrk(__func__, "f");
p = strstr(__func__, "f");
}